Humans may live on another planet one day! That     1     (seem) impossible years ago. But now the idea may come true. According to Stephen Hawking, a British     2     (science), humans only have about 1,000 years to live on the earth. It means that humans     3     (fly) to another planet in 1,000 years. In fact, we have found one red planet Mars (火星). Experts have found that there     4     (be) water on it. The idea of living there looks possible. Thanks to science, the steps to Mars are getting     5     (fast) than before. For example, in 2013, Dutch experts     6     (plan) the first plan to put humans on Mars. They offered people one-way tickets to go and build a new home on Mars.     7     it was dangerous, over 200,000 people still wanted to take part in it.     8     the evening of September 21, US experts showed another plan to get humans to Mars in six years. They are also doing many     9     (prepare) to help people get back to the earth. I’m looking forward to     10     (live) on Mars. Will you join us?

【推荐3】Visiting Mars

Have you ever thought about visiting Mars? For many years, only a    1    could go there. But since 2044, Red Planet Travel Company giving everybody the chance to take a holiday on this fascinating planet.

On our high-speed, wonderful s    2    the Martian Express, the journey from Earth to Mars takes just six weeks. Our trips take place once every two years, because this is when the two planets move close t    3    . Our next departure will be in February 2052, and you could go! You'll stay on Mars for three weeks, and then r    4     to Earth on the Martian Express.

On Mars, you'll stay in our c    5    climate-controlled hotel. You'll eat food from our special farms. You'll hear interesting talks given by the scientists who live on Mars, and can even help them with their e    6    . You'll enjoy walking around, because the gravity on Mars is weaker than the gravity on Earth. Dancing is great fun on Mars.

You can take a cable car up to the top of Olympus Mons, the tallest mountain on Mars. It is about 21 kilometres high—more than twice as high as Earth's tallest mountain. You'll be able to take amazing photographs!

Hurry! Book your place now on the Martian Express, and soon you'll be on the way to Mars!

Visit Red Planet Travel Company. com to make a booking.

Hitchbot

Have you ever seen a hitchhiker(搭便车的旅行者)standing by the side of a road? Now drivers in Canada might see     1     unusual hitchhiker; a hitchhiking robot.

One of its inventors, David Harris Smith, has hitched across Canada three times. Smith and a friend, Frauke Zeller, have built Hitchbot because they wanted     2     (see) if people would stop and give the robot a lift and talk to it. The robot can chat about things it has learned, and   about     3     (it) trip. You might think it’s a joke,     4     Smith and Zeller’s experiment has a serious point: can robots and people get along?

Hitchbot     5     (begin) its journey in Nova Scotia in July. It has already completed a third of its 6,000-mile trip to Victoria. More than 57,000 people are following its journey     6     (close) on Facebook and Twitter, and travelers have posted lots of     7     (photo) on the websites. Hitchbot has also done some shopping, eaten motor oil, and had fun with travelers. Nobody knows     8     it will finish its journey. It might be     9     (long) than expected, but Zeller and Smith want Hitch to get     10     many rides as it can. It hasn’t been in a self-driving car yet, but anything is possible!

Three is a powerful number. If you take a close look at your life, you will find that it is all around us. Everything has a     1     (begin), a middle and an end. We eat three meals a day. Traffic lights all over the world use three     2    : red, yellow and green. Many famous slogans（标语）are all three words long. For example, Just do it. I’m loving it. Coke is it.

But     3     is this number so powerful? Well, one of the main reasons is that human brain likes     4     (think) in patterns（规律）. If there is no patterns, our brains will create them. And three is the     5     (small) number needed to form a pattern. As the old saying goes, “Once is luck,     6     is coincidence （巧合）, three times is a pattern.” Moreover, our brains can only remember a small amount of     7     [ˌɪnfəˈmeɪʃn] at any given time. As a result, “Important things need to be repeated for three times” becomes popular around us.

    8     we make a good use of the rule of three in our daily lives, we can make any things easier. For example, many people like to     9     [æd] lots of tasks to their to-do list. Experts, however,     10     [ədˈvaɪz] limiting themselves to just three tasks. So the next time you are making New Year’s resolutions, why not list only three things? The longer your list is, the less likely you are going to keep it.